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CVE-2020-28874
high
CVSS 7.5
Privilege Escalation in projectsend (CVE-2020-28874)
Summary
vulnerability in projectsend (CVE-2020-28874). Data can be tampered with by attackers.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2020-28874** has been found in projectsend.
Data can be tampered with by attackers. CVSS score: 7.5/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "projectsend CVE-2020-28874" on the vendor's site.
CVE-2020-28874 (projectsend) — CWE-269 / CVSS v3 7.5
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
❓ What is the problem
**A vulnerability** (CWE-269) exists in projectsend.
📍 Affected scope
projectsend — .
🔥 Severity
Severity: High (CVSS 7.5/10). Data can be tampered with by attackers
🔧 How to fix
Update to the patched release per vendor advisory.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'projectsend' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'projectsend' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で `projectsend` を grep し、稼働しているサービス・バージョンを把握する。
-
7Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。
References
- web https://github.com/projectsend/projectsend/commit/440204734e9a1687cb9887e1c887173d23c5a93e
- web https://github.com/projectsend/projectsend/commits/master
- web https://github.com/projectsend/projectsend/releases/tag/r1295
- web https://github.com/varandinawer/CVE-2020-28874
- web http://projectsend.com
- web https://nvd.nist.gov/vuln/detail/CVE-2020-28874
- web https://github.com/advisories/GHSA-g5ww-gvff-fp7p